var aryImages = new Array(2);

  aryImages[0] = "img/menu/home_on.jpg";
  aryImages[1] = "img/menu/home.jpg";
  aryImages[2] = "img/menu/about_on.jpg";
  aryImages[3] = "img/menu/about.jpg";
  aryImages[4] = "img/menu/chiropractic_on.jpg";
  aryImages[5] = "img/menu/chiropractic.jpg";
  aryImages[6] = "img/menu/pilates_on.jpg";
  aryImages[7] = "img/menu/pilates.jpg";
  aryImages[8] = "img/menu/featured_services_on.jpg";
  aryImages[9] = "img/menu/featured_services.jpg";
  aryImages[10] = "img/menu/contact_on.jpg";
  aryImages[11] = "img/menu/contact.jpg";



  for (i=0; i < aryImages.length; i++) {
    var preload = new Image();
    preload.src = aryImages[i];
  }
  
  //get the page name

function swap(imgIndex, imgName) {

    document[imgName].src = aryImages[imgIndex];
  }
  
  
 function setDefault() {
  
  var sPath = window.location.pathname;
  var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);
  
  if ('default.aspx' == sPage) {  
   swap(0,'imgMenuHome');
   aryImages[1] = "img/menu/home_on.jpg";
    } 
  else if ('about.aspx' == sPage) {
   swap(2,'imgMenuAbout');
   aryImages[3] = "img/menu/about_on.jpg";
    }
    else if ('chiropractic.aspx' == sPage) {
   swap(4,'imgMenuChiro');
   aryImages[5] = "img/menu/chiropractic_on.jpg";
    }
    else if ('chiroandpregnancy.aspx' == sPage) {
   swap(4,'imgMenuChiro');
   aryImages[5] = "img/menu/chiropractic_on.jpg";
    }

    else if ('pilates.aspx' == sPage) {
   swap(6,'imgMenuPilates');
   aryImages[7] = "img/menu/pilates_on.jpg";
    }
    
    else if ('pilates_private.aspx' == sPage) {
   swap(6,'imgMenuPilates');
   aryImages[7] = "img/menu/pilates_on.jpg";
    }
    else if ('pilates_semiprivate.aspx' == sPage) {
   swap(6,'imgMenuPilates');
   aryImages[7] = "img/menu/pilates_on.jpg";
    }
    else if ('pilates_prenatal.aspx' == sPage) {
   swap(6,'imgMenuPilates');
   aryImages[7] = "img/menu/pilates_on.jpg";
    }
    
    
    else if ('services.aspx' == sPage) {
   swap(8,'imgMenuServices');
   aryImages[9] = "img/menu/featured_services_on.jpg";
    }
    else if ('services_soft_tissue_therapy.aspx' == sPage) {
   swap(8,'imgMenuServices');
   aryImages[9] = "img/menu/featured_services_on.jpg";
    }
    else if ('services_orthotics.aspx' == sPage) {
   swap(8,'imgMenuServices');
   aryImages[9] = "img/menu/featured_services_on.jpg";
    }
    else if ('services_vibration.aspx' == sPage) {
   swap(8,'imgMenuServices');
   aryImages[9] = "img/menu/featured_services_on.jpg";
    }
    
    
    
    
         else if ('contact.aspx' == sPage) {
   swap(10,'imgMenuContact');
   aryImages[11] = "img/menu/contact_on.jpg";
    }
    else
    {
    swap(0,'imgMenuHome');
   aryImages[1] = "img/menu/home_on.jpg";
    }
 }